package trastienda.filtro;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ValidarAutorizacionFilter implements Filter {
	private FilterConfig config;

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {

		if (((HttpServletRequest) request).getSession().getAttribute("USUARIO_ACTUAL") == null) {
			((HttpServletResponse) response).sendRedirect("../../faces/login.jsp");
		} else {
			chain.doFilter(request, response);
		}
	}

	public void init(FilterConfig config) throws ServletException {
		this.config = config;
	}

	public void destroy() {
		this.config = null;
	}
}
